CODEWITHSUNDEEP
cocoaparametersswiftnaming
cfischer
cfischer

Reputation: 24902

Methods without external names in Swift?

Is it possible to force all parameters of a Swift method to have only internal names?

I want the syntax to be terser in a helper method and all the parameter names gets in the way.

Upvotes: 1

Views: 84

Answers (1)

Mike S
Mike S

Reputation: 42325

Yep, use an _ for the external name.

From the docs:

If you do not want to provide an external name for the second or subsequent parameter of a method, override the default behavior by using an underscore character (_) as an explicit external parameter name for that parameter.

Note: You don't need an _ on the first parameter, it won't have an external name by default.

class SomeClass {
    func someFunction(someString: String, _ someInt: Int, _ someDouble: Double) {
        /* ... */
    }
}

var c = SomeClass()
c.someFunction("foo", 1, 3.14)

Upvotes: 4

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